7d70dfefe3d06d699893f3dea83769448177a210b575b5f5331c209f89b541d8

Analysis

max time kernel
43s
max time network
48s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
06/11/2022, 08:23

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General

Target

7d70dfefe3d06d699893f3dea83769448177a210b575b5f5331c209f89b541d8.dll
Size

802KB
MD5

3a249853728b45b7f9167700bde334bd
SHA1

80cc1d21344f8e0403f6d86c45d7d95b925e5a5c
SHA256

7d70dfefe3d06d699893f3dea83769448177a210b575b5f5331c209f89b541d8
SHA512

e6e5203969e3abd08564e705c3ab6140ab85e5eade2d5d57c9f668eb87524e3c05b4ddb115a7746d38ab1976cc702e3f71ef36c9f5a13c4b095b30cbfcceb6fa
SSDEEP

24576:7i5+B+GT31CLJqlDBnprOT8oz57JEMyY8rWTDwHgcXNl:Uq+GDoJi3gyMSuK1

Score

9^/10

evasion persistence

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Wine	rundll32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-4063495947-34355257-727531523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Temp = "rundll32.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\7d70dfefe3d06d699893f3dea83769448177a210b575b5f5331c209f89b541d8.dll,nbkmehswxygrqbasrqrix"	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1252	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1252	rundll32.exe
1252	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1252	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 1252	1760	rundll32.exe	27
PID 1760 wrote to memory of 1252	1760	rundll32.exe	27
PID 1760 wrote to memory of 1252	1760	rundll32.exe	27
PID 1760 wrote to memory of 1252	1760	rundll32.exe	27
PID 1760 wrote to memory of 1252	1760	rundll32.exe	27
PID 1760 wrote to memory of 1252	1760	rundll32.exe	27
PID 1760 wrote to memory of 1252	1760	rundll32.exe	27

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7d70dfefe3d06d699893f3dea83769448177a210b575b5f5331c209f89b541d8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7d70dfefe3d06d699893f3dea83769448177a210b575b5f5331c209f89b541d8.dll,#1
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:1252

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1252-55-0x0000000075931000-0x0000000075933000-memory.dmp

Filesize
8KB

Download
memory/1252-56-0x0000000001D00000-0x0000000001ECC000-memory.dmp

Filesize
1.8MB

Download
memory/1252-57-0x0000000076F80000-0x0000000077100000-memory.dmp

Filesize
1.5MB

Download
memory/1252-58-0x0000000001D00000-0x0000000001ECC000-memory.dmp

Filesize
1.8MB

Download
memory/1252-59-0x0000000001D00000-0x0000000001ECC000-memory.dmp

Filesize
1.8MB

Download
memory/1252-60-0x0000000001D00000-0x0000000001ECC000-memory.dmp

Filesize
1.8MB

Download